• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Building Bio-Reactors

Extracts from this document...

Introduction

Building Bio-Reactors Goals To demonstrate the importance composting has on the environment and us through hands on experiments. To determine best methods of composting. [top] Objectives * Students will be able to describe the process of composting. * Students will be able to design and construct their own pop bottle bio-reactors. [top] Materials (per group) * 2-liter pop bottle * 750 g yogurt container * Styrofoam plate or tray * Nail for making holes * Duct tape or clear packaging tape * Wooden skewers * Insulation materials such as sheets of fibreglass or foam rubber, or Styrofoam * Fine-meshed screen to cover top of soda bottle and air holes in bottom half * Thermometer that will be long enough to reach down into the centre of the compost * Chopped vegetable scraps such as lettuce leaves, carrot or potato peelings, and apple cores, or garden wastes such as weeds or grass clippings * Bulking agent such as wood shavings or 1-2 cm pieces of paper egg cartons, cardboard, or wood * Optional: hollow tubing to provide ventilation * Utility knife [top] Lesson Summary Class length one hour. ...read more.

Middle

* FOOD - A good mix of browns and greens is the best nutritional balance for the microbes. Browns are dry and dead plant materials such as straw, dry brown weeds, autumn leaves, and wood chips or sawdust. These items are a source of energy for the compost microbes. Greens are fresh (and often green) plant materials such as green weeds from the garden, kitchen fruit and vegetable scraps, green leaves, coffee grounds and tea bags, fresh horse manure, etc. These can be thought of as a protein source for the billions of multiplying microbes. [top] How to build the bio-reactor **Depending on the age of the students or the time slotted for the class, the cutting can be done before hand. ** 1. Using a utility knife or sharp-pointed scissors cut the top off the pop bottle just below the shoulder and cut the yogurt container approximately 3 - 5 inches from the top. By placing the top part of the yogurt container over the shoulder of the pop bottle, the top of the pop bottle will fit snugly onto the container. ...read more.

Conclusion

5. Put the top piece of the soda bottle back on and seal it in place with tape. 6. Cover the top hole with a piece of nylon stocking rubber banded into place. Alternatively, if you are worried about potential odours you can ventilate your bioreactor using rubber tubing out the top. Simply use the screw-on soda bottle cover with a hole drilled through it for a piece of rubber tubing, which leads out the window. 7. If you want to eliminate the possibility of flies becoming a problem, you can cover all air holes with a piece of nylon stocking or other fine-meshed fabric. 8. Insulate the bioreactor by wrapping it in aluminium foil, shiny side in, and then rubber foam. Make sure not to block the ventilation holes. (Because these pop bottle bioreactors are much smaller than the typical compost pile, they will work best if insulated to retain the heat that is generated during decomposition.) 9. Record the initial temperature of each bioreactor and then take a reading after a couple of days. Chart the data to see if there is an increase in temperature. http://webster.acadiau.ca/conted/Outreach/resource/lessons/bioreact.html ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Green Plants as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Green Plants as Organisms essays

  1. Peer reviewed

    Osmosis in potato and apple

    3 star(s)

    The potato chips will decrease in mass and length slightly, becoming flaccid, also very slightly. At 0.6M concentration: The apple tissue will have a slightly higher water potential than in the salt solution. If this is the case, the apple chips will decrease in mass and length, and the cell will become slightly flaccid.

  2. Mangrove Soil Analysis

    Materials: * The six dry soil samples form experiment 3 Field Capacity. * 6 x evaporating dishes * 6 x heat mats, tripod, pipe clay triangle and wire gauze * 6 x Bunsen burner * Metal Spatula * Tongs * Balance accurate to 0.01g Diagram: Procedure: 1.

  1. Construct a rocket from a discarded PET (Polthylene Teraphetlate) drink bottle.

    Here is a graph, which illustrates our results. Selection of variable's The Key variable's the key variables in this assignment are related to the rocket it's self and the environment the practical was performed in. We will be investigating the variable of the amount of water we filled the rocket

  2. How did Leamington develop into a typical spa town of the mid nineteenth century?

    Hospitals: There was only one main hospital that was set up in Leamington Spa called Warneford General Hospital. In Bath there was the Royal Mineral Water Hospital for both the rich and poor alike. There was a deposit of �3 to pay on entry.

  1. The effects of organic effluent from the seweage on the biodiversty in a freshwater ...

    Where seweage is deposited untreated in relatively small amounts of water i.e. streams the BOD may be great enough to remove entirely the dissolved oxygen. This causes death of aerobic species, including fish, leaving only anerobic ones. The BOD is offset by new oxygen being dissolved and in fast-moving, shallow, turbulent streams this is sufficient enough to prevent anaerobic conditions.

  2. Why Insulate Houses?

    There are two reasons for this: * Objects that will lose heat quickly will show a definite cooling curve, even if we are unable to use the more accurate methods of tracking heat loss in a shorter period of time.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work